I've just seen The Monuments Men (good film) and they mentioned that unlike the Allies who intended to return stolen art (wherever possible) the Soviets intended to seize the art for War Reparations. What does this mean? Did Russia sell the art to pay for damages? Did they place it in their own museums? Where is this art today?
There's a lot of it in various Russian museums, most notably the Hermitage in St Petersburg. Here are relatively recent articles on the subject:
http://www.nytimes.com/1995/03/30/arts/hermitage-in-its-manner-displays-its-looted-art.html